"On Parole has wonderful melodies and a very strong structure."

Nadja Wijzenbeek, Lendvai Trio

Erika Bordon

"Symphony Arabica was breathtaking. Respect!!"

Fouzia Outmany

"Capricious music that does not fall apart, because, in spite of all surprises, Twaalfhoven still knows how to apply a logical dramatic structure"

De Telegraaf, Roeland Hazendonk (If you reveal)

"Song of the man who forgot his language is a beautiful research into sound and time."

Trouw, Anthony Fiumara

"Twaalfhoven's courageous effort to expand the scope of the medium called orchestra, with her traditions and limitations, should be praised. How will he use and deepen these ideas afterwards? We should pay much attention to his future activities."

Yomiuri Shimbun, Junko Shibatsuji

"Both childeren and adults had a wonderful experience being on stage together, being part of a large orchestra, and to perform a magnificent, exciting piece of music together."